Removed an unused logger in middleware/common.py

django/middleware/common.py

-import logging
 import re
 
 from django import http
@@ -12,8 +11,6 @@ from django.utils.encoding import force_text
 from django.utils.http import unquote_etag
 from django.utils.six.moves.urllib.parse import urlparse
 
-logger = logging.getLogger('django.request')
-
 
 class CommonMiddleware(MiddlewareMixin):
     """